CN109356813A - Underground compressed air energy storage and underground coal gasification combined system and method - Google Patents
Underground compressed air energy storage and underground coal gasification combined system and method Download PDFInfo
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- CN109356813A CN109356813A CN201811294974.XA CN201811294974A CN109356813A CN 109356813 A CN109356813 A CN 109356813A CN 201811294974 A CN201811294974 A CN 201811294974A CN 109356813 A CN109356813 A CN 109356813A
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- 238000002309 gasification Methods 0.000 title claims abstract description 208
- 239000003245 coal Substances 0.000 title claims abstract description 143
- 238000004146 energy storage Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010248 power generation Methods 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims description 154
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 142
- 239000003345 natural gas Substances 0.000 claims description 42
- 238000002347 injection Methods 0.000 claims description 38
- 239000007924 injection Substances 0.000 claims description 38
- 238000000605 extraction Methods 0.000 claims description 29
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 5
- 239000003034 coal gas Substances 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims 1
- 239000002803 fossil fuel Substances 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 230000035699 permeability Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000700112 Chinchilla Species 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000003476 subbituminous coal Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G5/00—Storing fluids in natural or artificial cavities or chambers in the earth
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/295—Gasification of minerals, e.g. for producing mixtures of combustible gases
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/16—Modification of mine passages or chambers for storage purposes, especially for liquids or gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/22—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being gaseous at standard temperature and pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a system and a method for combining underground compressed air energy storage and underground coal gasification. The coupling system comprises: renewable energy power generation system, underground compressed air energy storage system and underground coal gasification system. The underground compressed air energy storage system comprises a first compressor, an underground gas storage and a gas turbine. The underground coal gasification system comprises a first underground coal gasification cave for coal gasification, a second compressor, a second underground coal gasification cave after coal gasification and a gas separator. The invention overcomes the problems of intermittency and instability of the existing renewable energy sources, and simultaneously can solve the problems of air required by coal gasification and fossil fuel required by compressed air.
Description
Technical field
The present invention relates to renewable energy utilization development technique fields.More particularly to a kind of underground compressed air storage
It can be with underground gasification combined system and method.
Background technique
The development of its own can be greatly limited because of its intrinsic intermittence and unstability in the raw energy.Solution
Certainly a kind of effective ways of this problem are exactly to develop large-scale energy-storage system.Compressed-air energy storage because scale it is big, it is high-efficient, can
It is considered as the energy storage mode of most market potential the features such as strong by property.Compressed-air energy storage refers to that network load trough period will
Electric energy be used for compressed air, by air high pressure sealing abandoned well, the seabed air accumulator of sedimentation, cavern, expired oil/gas well or
In newly-built gas storage well, in the energy storage mode of network load peak period release compressed air pushing turbine power generation.Release ground pushes
The fuel (such as natural gas) of contracting air to combustion chamber and offer burns, before pushing turbine power generation.
It is put into commercial operation currently, having two large-scale compression air energy-accumulating power stations in the world.First is to throw for 1978
Enter the German power station Huntorf of comercial operation, at present still in operation.Second is the U.S. put into commercial operation in 1991
The McIntosh compressed-air energy storage power station in the state Alabama carries out long distance by the energy control center of the state Alabama Utilities Electric Co.
From automatic control.
The U.S. state Ohio Norton since 2001 build the large-scale compression air energy storage business power station of a 2700MW,
Compressed-air energy storage demonstrative project is stared in the upper sand river that Japan put into operation in 2001, is located at the prefecture Hokkaido Kong Zhi, output power
For 2MW.Currently, Russia, method, meaning, Luxembourg, South Africa, Israel and South Korea etc. are also in active development in addition to moral, beauty, day, Switzerland
Compressed-air energy storage power station.
Underground gasification is that the coal in underground is carried out to controlled burning, is made by heat effect to coal and chemistry
With the new technology for generating fuel gas, comprehensive exploitation clean energy resource and production industrial chemicals；The combustion process of underground gasification needs
Inject air or oxygen.1868, moral descendants British scientist William Siemens was put forward for the first time underground gasification concept
(Underground Coal Gasification, abbreviation UCG).1888, Russian scientists Mendeleev proposed more detailed
Underground coal gasification(UCG) design.1910, Americanized scholar Betts obtained three U.S., Canada and Britain underground gasifications
Patent.
The former Soviet Union has made intensive studies underground coal gasification(UCG) since the 1930s, has tested connection successfully
Straight well and large-inclination-angle coal bed gasification furnace structure.A variety of connection injection wells and producing well method are tested, finally confirms hydraulic fracturing
It is effectively to be connected to technique with reverse combustion.The U.S. 1972-1989, which has carried out more than 30 field tests, confirms that the technology has
Certain development prospect.1989-1998, Spain, Britain and Belgium have carried out European Union in Hispanic El Tremedal
Underground coal gasification(UCG) project, test confirm that methane concentration is high in synthesis gas under high operating pressure.Australian Linc Energy
The Chinchilla underground coal gasification(UCG) that company implements, target zone is Surat basin Macalister A, B subbituminous coal layer.
Underground compressed air energy storage has a very strong market potential, but its there is also disadvantages, i.e., using being stored in underground
When compressed air is generated electricity, it is also necessary to provide fossil fuel for driving steam turbine.Underground gasification can reduce coal mining
Link and coal mining caused by pollution, but constantly inject air or oxygen to underground and need to consume the energy, together
When gas injection rate and control combustion zone have close relationship.
Summary of the invention
In order to preferably solve underground compressed air energy storage technology and underground gasification technology, this hair
It is bright that a kind of underground compressed air energy storage and underground gasification combined system and method are provided.Technical solution of the present invention utilizes can not
Grid-connected renewable energy power generation is utilized for driving air compressor to gas storage and underground gasification cave injection air
Gas storage storage compressed air and coal gasification generate fuel gas buring generate electricity, can solve renewable energy intermittence and
The problem of unstability；Fossil fuel problem needed for air and compressed air needed for coal gasification can also be solved simultaneously.
In order to achieve the goal above, the invention adopts the following technical scheme:
One aspect of the present invention provides a kind of underground compressed air energy storage and underground gasification combined system, the combined system packet
It includes: renewable energy system, underground compressed air energy storage systems and underground gasification system.
The underground compressed air energy storage systems, including the first compressor, underground natural gas storage tank and gas turbine.
The underground gasification system, including carrying out the first underground gasification cave of coal gasification, the second compressor,
The second underground gasification cave and gas separator after coal gasification.
For the first compression mechanism of electrical energy drive that the renewable energy system generates for compressed air, the compression is empty
Gas respectively enters underground natural gas storage tank and carries out storage and the first underground gasification cave progress coal gasification；The coal that the coal gasification generates
Gasifying gas enters the second underground gasification cave after the second compressor compresses and is stored.
When needing to be generated electricity using the compressed air of storage, the compressed air being stored in underground natural gas storage tank enters combustion
Gas-turbine；The pressurized gas gas being stored in the second underground gasification cave simultaneously enters gas separator and isolates first
Alkane, the methane enters gas turbine and compressed air carries out combustion power generation.
Specifically, the underground natural gas storage tank includes empty for the underground air injection well of injecting compressed air and extraction compression
The underground air of gas produces well；First underground gasification cave includes the first coal gasification injection for injecting compressed air
First coal gasification of well and extraction coal gasification gas produces well；Second underground gasification cave includes for injecting compression coal
Second coal gasification injection well of gasifying gas and the second coal gasification of extraction pressurized gas gas produce well.That is this preferred embodiment
In combined system include: renewable energy system, underground compressed air energy storage systems and underground gasification system；It is described
Underground compressed air energy storage systems include the first compressor, underground air injection well, underground natural gas storage tank, underground air extraction well and
Gas turbine；The underground gasification system includes the first underground gasification cave, the first coal gasification injection well, the first coal gasification
Produce well, the second compressor, the second underground gasification cave, the second coal gasification injection well, the second coal gasification extraction well and gas
Separator.
The renewable energy system carries out power generation using renewable energy and produces electricl energy, the electrical energy drive first
Compression mechanism is for compressed air.The compressed air passes through underground air injection well respectively and the first coal gasification injection well is delivered to
Underground natural gas storage tank and the first underground gasification cave for carrying out coal gasification.It is generated in first underground gasification cave
Coal gasification gas passes through the second coal gasification injection well by the extraction well extraction of the first coal gasification and after the second compressor compresses
The second underground gasification cave after being stored in coal gasification.When needing to be sent out using the compressed air stored in underground natural gas storage tank
When electric, the compressed air stored in the underground natural gas storage tank is produced into well extraction by underground air and is delivered to gas turbine；Together
When by the pressurized gas gas stored in the second underground gasification cave by the second coal gasification produce well extraction, and pass through gas
Body separator isolates methane, and methane is delivered to gas turbine and compressed air carries out combustion power generation.
Preferably, the underground gasification system further includes the gas collection tank connecting with the gas separator, to
The coal gasification gas after methane is isolated in collection.Coal gasification gas includes the gases such as methane, hydrogen, carbon monoxide, gas separation
The problems such as residual gas is stored into gas collection tank after separating methane gas, avoids pollution by device.
Preferably, the top of the underground natural gas storage tank is structural trap or subterranean coal, and lower part is water table.Tectosphere
The permeability for closing portion rock stratum is very low, has good plugging action so that air in structural trap will not upward loss, under
Portion is that water table also functions to the effect for blocking compressed air, and gas will not downward loss.When underground natural gas storage tank top is underground
Coal seam when lower part is water table, also has good Sealing Conditions, can effectively prevent the leakage of compressed air.First
Pressure of the pressure of the standby compressed air of compression mechanism slightly larger than the strata pressure of structural trap or slightly larger than subterranean coal, so that
Air can be injected into underground.Likewise, the pressure of the standby pressurized gas gas of the second compression mechanism is also needed slightly larger than underground
The pressure in coal seam.
Preferably, the renewable energy system utilizes the renewable energy power generations such as wind energy, solar energy.It is such can be again
Electric energy caused by the raw energy can not direct grid-connected, and there are problems that intermittence and unstability, by using such electric energy
It is stored in underground in compressed air, compressed air is reused when needed for generating electricity, completes thermal energy storage process.The present invention is also by this
Part electric energy is used to provide air for underground gasification, also solves the energy and inflation problem of underground gasification.
Another aspect of the present invention also provides a kind of underground compressed air energy storage and underground gasification method for combined use, the method
Include:
Using electric energy produced by renewable energy power generation, the electric energy is for driving the first compression mechanism for compressed air.
The compressed air is delivered to underground natural gas storage tank respectively and carries out storage and just in the first underground gas of coal gasification
Change cave and carries out coal gasification；The coal gasification gas that the coal gasification generates is delivered to after the second compressor compressed, and is delivered to
The second underground gasification cave after coal gasification is stored.
When needing to be generated electricity using the compressed air of storage, the compressed air being stored in underground natural gas storage tank is conveyed
To gas turbine；The pressurized gas gas being stored in the second underground gasification cave is delivered to gas separator point simultaneously
Methane is separated out, the methane is delivered to gas turbine and compressed air carries out combustion power generation.
Underground compressed air energy storage of the invention and underground gasification method for combined use be a kind of new energy conversion, storage and
By in the way of, overcome the problems, such as existing renewable energy intermittence and unstability, while can also solve needed for coal gasification
Air and compressed air needed for fossil fuel problem.
Preferably, the compressed air is delivered to underground natural gas storage tank by underground air injection well, is adopted by underground air
From underground natural gas storage tank, extraction is delivered to gas turbine to well out；The compressed air is delivered to first by the first coal gasification injection well
Underground gasification cave carries out coal gasification, and generated coal gasification gas produces well extraction by the first coal gasification and is delivered to second
Compressor；The pressurized gas gas is delivered to the second underground gasification cave by the second coal gasification injection well, passes through
The extraction well extraction of two coal gasifications is delivered to gas separator.At this point, this method comprises: carrying out power generation generation using renewable energy
Electric energy, first compression mechanism of electrical energy drive is for compressed air.The compressed air pass through respectively underground air injection well and
First coal gasification injection well is delivered to underground natural gas storage tank and is carrying out the first underground gasification cave of coal gasification.Described first
The coal gasification gas generated in underground gasification cave produces well by the first coal gasification and produces and pass through the second compressor compresses
Afterwards, the second underground gasification cave after coal gasification is stored in by the second coal gasification injection well.When needing using underground gas storage
When the compressed air stored in library is generated electricity, the compressed air stored in the underground natural gas storage tank is produced by underground air
Well extraction is delivered to gas turbine；The pressurized gas gas stored in the second underground gasification cave is passed through into the second coal simultaneously
Gasification extraction well extraction, and methane is isolated by gas separator, methane is delivered to gas turbine and compressed air carries out
Combustion power generation.
Preferably, the pressurized gas gas remaining gas after gas separator isolates methane is delivered to gas
Body collecting tank is collected.Coal gasification gas includes the gases such as methane, hydrogen, carbon monoxide, and gas separator is by methane gas
The problems such as residual gas is stored into gas collection tank after separating, avoids pollution.
Preferably, the top of the underground natural gas storage tank is structural trap or subterranean coal, and lower part is water table.Tectosphere
The permeability for closing portion rock stratum is very low, has good plugging action so that air in structural trap will not upward loss, under
Portion is that water table also functions to the effect for blocking compressed air, and gas will not downward loss.When underground natural gas storage tank top is underground
Coal seam when lower part is water table, also has good Sealing Conditions, can effectively prevent the leakage of compressed air.First
Pressure of the pressure of the standby compressed air of compression mechanism slightly larger than the strata pressure of structural trap or slightly larger than subterranean coal, so that
Air can be injected into underground.Likewise, the pressure of the standby pressurized gas gas of the second compression mechanism is also needed slightly larger than underground
The pressure in coal seam.
Preferably, the renewable energy is the renewable energy such as wind energy or solar energy.Produced by such renewable energy
Electric energy can not direct grid-connected, and there are problems that intermittent and unstability, deposited by the way that such electric energy is used for compressed air
It is stored in underground, compressed air is reused when needed for generating electricity, completes thermal energy storage process.Also by this part, electric energy is used for the present invention
Air is provided for underground gasification, also solves the energy and inflation problem of underground gasification.
Detailed description of the invention
Fig. 1 is the signal of underground compressed the air energy storage and underground gasification combined system of a preferred embodiment of the invention
Figure.
Fig. 2 is the underground compressed air energy storage of another preferred embodiment of the present invention and showing for underground gasification combined system
It is intended to.
Description of symbols:
1- pipeline；The first compressor of 2-；3- pipeline；4- pipeline；5- underground air injection well；6- underground air produces well；
7- structural trap；8- water table；9- subterranean coal；The first underground gasification of 10- cave；The second underground gasification of 11- cave；
12- the first underground gasification injection well；The first underground gasification of 13- produces well；14- compressor；The second underground gasification of 15- note
Enter well；The second underground gasification of 16- produces well；17- gas separator；18- gas collection tank；19- pipeline；20- pipeline；21-
Gas turbine.
Specific embodiment
In order to illustrate more clearly of the present invention, below with reference to preferred embodiment, the present invention is described further.Ability
Field technique personnel should be appreciated that following specifically described content is illustrative and be not restrictive, this should not be limited with this
The protection scope of invention.
Involved in the present invention first, second description convenience for illustration only does not form technical solution and limits.
The present invention provides a kind of underground compressed air energy storage and underground gasification combined system, which includes: can
Renewable energy generating system, underground compressed air energy storage systems and underground gasification system.
The underground compressed air energy storage systems, including the first compressor, underground natural gas storage tank and gas turbine.
The underground gasification system, including carrying out the first underground gasification cave of coal gasification, the second compressor,
The second underground gasification cave and gas separator after coal gasification.
For the first compression mechanism of electrical energy drive that the renewable energy system generates for compressed air, the compression is empty
Gas respectively enters underground natural gas storage tank and carries out storage and the first underground gasification cave progress coal gasification；The coal that the coal gasification generates
Gasifying gas enters the second underground gasification cave after the second compressor compresses and is stored.
When needing to be generated electricity using the compressed air of storage, the compressed air being stored in underground natural gas storage tank enters combustion
Gas-turbine；The pressurized gas gas being stored in the second underground gasification cave simultaneously enters gas separator and isolates first
Alkane, the methane enters gas turbine and compressed air carries out combustion power generation.
Relative to this system, the present invention also provides a kind of underground compressed air energy storage and underground gasification method for combined use, institutes
The method of stating includes:
Using electric energy produced by renewable energy power generation, the electric energy is for driving the first compression mechanism for compressed air.
The compressed air is delivered to underground natural gas storage tank respectively and carries out storage and just in the first underground gas of coal gasification
Change cave and carries out coal gasification；The coal gasification gas that the coal gasification generates is delivered to after the second compressor compressed, and is delivered to
The second underground gasification cave after coal gasification is stored.
When needing to be generated electricity using the compressed air of storage, the compressed air being stored in underground natural gas storage tank is conveyed
To gas turbine；The pressurized gas gas being stored in the second underground gasification cave is delivered to gas separator point simultaneously
Methane is separated out, the methane is delivered to gas turbine and compressed air carries out combustion power generation.
Technical solution of the present invention overcomes the problems, such as existing renewable energy intermittence and unstability, while can also solve
Certainly fossil fuel problem needed for air and compressed air needed for coal gasification.
The present invention provides a preferred underground compressed air energy storage and underground gasification combined system, as shown in Figure 1, should
Combined system includes: renewable energy system, underground compressed air energy storage systems and underground gasification system.
The underground compressed air energy storage systems include the first compressor 2, underground air injection well 5, underground natural gas storage tank 22,
Underground air produces well 6 and gas turbine 21.Wherein 22 top of underground natural gas storage tank is structural trap 7, and lower part is water table 8.
The underground gasification system includes the first underground gasification cave 10, the first coal gasification injection well 12, the first coal
Gasification extraction well 13, the second compressor 14, the second underground gasification cave 11, the second coal gasification injection well 15, the second coal gasification
Produce well 16, gas separator 17 and gas collecting tank 18.
The renewable energy system carries out power generation using renewable energy such as wind energy, solar energy and produces electricl energy, institute
It states the first compressor of electrical energy drive 2 and prepares compressed air.The pressure of compressed air is slightly larger than the strata pressure pressure of structural trap 7
Power allows air to be injected into underground.The permeability of 7 top rock stratum of structural trap is very low, has good plugging action, makes
Air in structural trap 7 will not upward loss, lower part is that water table 8 also functions to the effect for blocking compressed air, gas
It will not downward loss.
The compressed air passes through underground air injection well 5 respectively and the first coal gasification injection well 12 is delivered to underground gas storage
Library 22 and the first underground gasification cave 10 for carrying out coal gasification.Coal and air burning carry out coal gasification, underground coal gas
Change the gases such as methane, the hydrogen generated and the extraction of well 13 is produced by the first coal gasification, is compressed by the second compressor 14, compress coal
The pressure of gasifying gas also needs the pressure slightly larger than subterranean coal 9, after being stored in coal gasification by the second coal gasification injection well 15
The second underground gasification cave 11.
It, will be in the underground natural gas storage tank 22 when needing to be generated electricity using the compressed air stored in underground natural gas storage tank 22
The compressed air of storage produces the extraction of well 6 by underground air and is delivered to gas turbine 21；Simultaneously by the second underground gasification hole
The pressurized gas gas stored in cave 11 produces well 16 by the second coal gasification and produces, and isolates by gas separator 17
Methane is delivered to gas turbine 21 and compressed air carries out combustion power generation by methane.Isolated using gas separator 17 its
Its gas is stored in gas collection tank 18, avoids pollution problem.
Coal gasification gas in this preferred embodiment first passes around the second empty underground stored after compression after gasification of the coal
In coal gasification cave, produces be used again when needed.The transmission of each section gas passes through pipeline in this preferred embodiment
Connection is realized, such as pipeline 1,3,4,19 and 20.
Specific underground compressed air storage, gasifying underground coal and gas turbine power generation belong to mature technology, these
Technology has been applied, and the present invention is herein no longer described the details of these three technologies.
The present invention also provides another preferred embodiments, as shown in Fig. 2, in the preferred embodiment, combined system packet
It includes: renewable energy system, underground compressed air energy storage systems and underground gasification system.
The underground compressed air energy storage systems include the first compressor 2, underground air injection well 5, underground natural gas storage tank 22,
Underground air produces well 6 and gas turbine 21.Wherein 22 top of underground natural gas storage tank is subterranean coal 9, and lower part is water table 8.
The underground gasification system includes the first underground gasification cave 10, the first coal gasification injection well 12, the first coal
Gasification extraction well 13, the second compressor 14, the second underground gasification cave 11, the second coal gasification injection well 15, the second coal gasification
Produce well 16, gas separator 17 and gas collecting tank 18.
The renewable energy system carries out power generation using renewable energy such as wind energy, solar energy and produces electricl energy, institute
It states the first compressor of electrical energy drive 2 and prepares compressed air.The pressure of compressed air is slightly larger than the strata pressure pressure of subterranean coal 9
Power allows air to be injected into underground.Subterranean coal 9 has good plugging action for compressed air, so that underground is stored up
Air in air reservoir 22 will not upward loss, lower part is that water table 8 also functions to the effect for blocking compressed air, and gas will not be to
Lower loss.
The compressed air passes through underground air injection well 5 respectively and the first coal gasification injection well 12 is delivered to underground gas storage
Library 22 and the first underground gasification cave 10 for carrying out coal gasification.Coal and air burning carry out coal gasification, underground coal gas
Change the gases such as methane, the hydrogen generated and the extraction of well 13 is produced by the first coal gasification, is compressed by the second compressor 14, compress coal
The pressure of gasifying gas also needs the pressure slightly larger than subterranean coal 9, after being stored in coal gasification by the second coal gasification injection well 15
The second underground gasification cave 11.
It, will be in the underground natural gas storage tank 22 when needing to be generated electricity using the compressed air stored in underground natural gas storage tank 22
The compressed air of storage produces the extraction of well 6 by underground air and is delivered to gas turbine 21；Simultaneously by the second underground gasification hole
The pressurized gas gas stored in cave 11 produces well 16 by the second coal gasification and produces, and isolates by gas separator 17
Methane is delivered to gas turbine 21 and compressed air carries out combustion power generation by methane.Isolated using gas separator 17 its
Its gas is stored in gas collection tank 18, avoids pollution problem.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of underground compressed air energy storage and underground gasification combined system, which is characterized in that the combined system includes:
Renewable energy system；
Underground compressed air energy storage systems, including the first compressor, underground natural gas storage tank and gas turbine；And
Underground gasification system, after carrying out the first underground gasification cave of coal gasification, the second compressor, coal gasification
The second underground gasification cave and gas separator；
The first compression mechanism of electrical energy drive that the renewable energy system generates is for compressed air, the compressed air point
Not Jin Ru underground natural gas storage tank carry out storage and the first underground gasification cave carry out coal gasification；The coal gasification that the coal gasification generates
Gas enters the second underground gasification cave after the second compressor compresses and is stored；
When needing to be generated electricity using the compressed air of storage, the compressed air being stored in underground natural gas storage tank enters combustion gas wheel
Machine；The pressurized gas gas being stored in the second underground gasification cave simultaneously enters gas separator and isolates methane, institute
It states methane and enters gas turbine and compressed air progress combustion power generation.
2. combined system according to claim 1, which is characterized in that the underground natural gas storage tank includes empty for injecting compression
The underground air injection well of gas and the underground air of extraction compressed air produce well；
First underground gasification cave includes the first coal gasification injection well and extraction coal gasification for injecting compressed air
First coal gasification of gas produces well；
Second underground gasification cave includes the second coal gasification injection well and extraction for injecting pressurized gas gas
Second coal gasification of pressurized gas gas produces well.
3. combined system according to claim 1, which is characterized in that the underground gasification system further includes and the gas
The gas collection tank of body separator connection, to collect the coal gasification gas after isolating methane.
4. combined system according to claim 1, which is characterized in that the top of the underground natural gas storage tank be structural trap or
Subterranean coal, lower part are water table.
5. combined system according to claim 1, which is characterized in that the renewable energy system using wind energy or
Solar power generation.
6. a kind of underground compressed air energy storage and underground gasification method for combined use, which is characterized in that the described method includes:
Using electric energy produced by renewable energy power generation, the electric energy is for driving the first compression mechanism for compressed air；
The compressed air is delivered to underground natural gas storage tank respectively and carries out storage and just in the first underground gasification hole of coal gasification
Cave carries out coal gasification；The coal gasification gas that the coal gasification generates is delivered to after the second compressor compressed, and is delivered to coal gas
The second underground gasification cave after change is stored；
When needing to be generated electricity using the compressed air of storage, the compressed air being stored in underground natural gas storage tank is delivered to combustion
Gas-turbine；The pressurized gas gas being stored in the second underground gasification cave gas separator is delivered to simultaneously to isolate
The methane is delivered to gas turbine and compressed air carries out combustion power generation by methane.
7. method for combined use according to claim 6, which is characterized in that the compressed air is defeated by underground air injection well
It send to underground natural gas storage tank, producing well by underground air, extraction is delivered to gas turbine from underground natural gas storage tank；
The compressed air is delivered to the first underground gasification cave by the first coal gasification injection well and carries out coal gasification, produced
Coal gasification gas by the first coal gasification produce well extraction be delivered to the second compressor；
The pressurized gas gas is delivered to the second underground gasification cave by the second coal gasification injection well, passes through the second coal
Gasification extraction well extraction is delivered to gas separator.
8. method for combined use according to claim 6, which is characterized in that the pressurized gas gas passes through gas separator
It isolates remaining gas after methane and is delivered to gas collection tank and be collected.
9. method for combined use according to claim 6, which is characterized in that the top of the underground natural gas storage tank be structural trap or
Subterranean coal, lower part are water table.
10. method for combined use according to claim 6, which is characterized in that the renewable energy is wind energy or solar energy.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228318A (en) * | 2019-11-01 | 2021-01-15 | 张俊哲 | Method and system for compressing metallurgical gas for energy storage and combustion power generation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2193937B1 (en) * | 1972-07-22 | 1976-09-17 | Rhein Westfael Elect Werk Ag | |
| CN101760249A (en) * | 2008-12-19 | 2010-06-30 | 新奥科技发展有限公司 | Underground gasification coal derived energy chemical product poly-generation system and method |
| CN102619499A (en) * | 2012-03-30 | 2012-08-01 | 新奥气化采煤有限公司 | Method for monitoring distribution of coal underground gasification temperature zones |
| CN103742122A (en) * | 2014-01-28 | 2014-04-23 | 新奥气化采煤有限公司 | Underground coal gasification system and gasification method |
| CN103883400A (en) * | 2012-12-24 | 2014-06-25 | 新奥气化采煤有限公司 | Electricity generating method and electricity generating system |
-
2018
- 2018-11-01 CN CN201811294974.XA patent/CN109356813A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2193937B1 (en) * | 1972-07-22 | 1976-09-17 | Rhein Westfael Elect Werk Ag | |
| CN101760249A (en) * | 2008-12-19 | 2010-06-30 | 新奥科技发展有限公司 | Underground gasification coal derived energy chemical product poly-generation system and method |
| CN102619499A (en) * | 2012-03-30 | 2012-08-01 | 新奥气化采煤有限公司 | Method for monitoring distribution of coal underground gasification temperature zones |
| CN103883400A (en) * | 2012-12-24 | 2014-06-25 | 新奥气化采煤有限公司 | Electricity generating method and electricity generating system |
| CN103742122A (en) * | 2014-01-28 | 2014-04-23 | 新奥气化采煤有限公司 | Underground coal gasification system and gasification method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228318A (en) * | 2019-11-01 | 2021-01-15 | 张俊哲 | Method and system for compressing metallurgical gas for energy storage and combustion power generation |
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